“…These functions should result in an emphasis on the acoustic features characteristic of particular individuals. Acoustic individuality in vocalization has been demonstrated in a wide range of primate species using field investigations and laboratory experiments [e.g., mouse lemur Microcebus murinus, Zimmermann & Lerch, 1993; cotton-top tamarin Sayuinus oedipus, Snowdon et al, 1983; common marmoset Callithrix jacchus, Jones et al, 1993; tufted-ear marmoset Callithrix kuhli, Jorgensen & French, 1998; spider monkey Ateles geoffroyi, Chapman & Weary, 1990; squirrel monkey Saimiri sciureus, Boinski & Mitchell, 1997; rhesus monkey Macaca mulatta, Rendall et al, 1998; Japanese macaque Macaca fuscata, Ceugniet & Izumi, 2004; and chimpanzee Pan troglodytes, Mitani et al, 1996].…”